html {
  width: 100%;
  font-size: 14px;
  line-height: 1.4;
  overflow-x: hidden;
}

/*清除浮动*/
.clearfix:before,
.clearfix:after {
  content: ' ';
  display: table;
}
.clearfix:after {
  clear: both;
}
.clearfix {
  zoom: 1;
}
